[Oling_Roachinen]

https://www.landlordandtenant.org/no...rent-increase/

If a tenant has a fixed term tenancy (which has an end date), there is no requirement under the Residential Tenancies Act for the landlord to give written notice of a rent increase. However, it is a very good idea for the landlord to let the tenant know of the increase ahead of time.

While notice is not required, there are rules that a landlord must follow to increase the rent during a fixed term tenancy:

A landlord can only increase the rent if one year (365 days) has passed since the tenant moved in or since the last rent increase.
The landlord cannot increase the rent midway through a fixed term lease agreement; the landlord has to wait until the fixed-term agreement is over. For example, if a tenant signs a six month lease and then signs a one year lease, the landlord must wait until the one year lease is over before increasing rent, even though the 365th day falls halfway through the one year lease. The landlord must wait until that lease is over the raise the rent.